[MartinDS]

X-Plane is available for the Mac OS X.
Version 7.41 demo is about a 210 MB download!
Buy it for $50 and it arrives on a CD.

<http://www.x-plane.com/>
or
<http://www.x-plane.org/>

The sites are very different.

--and yes, it is used for flight training.

I hope that helps.
Martin Smith